While you are on an archaeological dig in Egypt, you observe a scarab beetle of mass m lies on the rim of a uniform disk of mass 3.80m (3.8 times the mass of the beetle) that can rotate freely about its center like a merry-go-round. Initially, the beetle and disk rotate together with an angular velocity of 0.230 rad/s. Then the beetle walks halfway to the center of the disk. (a) what then is the angular velocity of the beetle-disk system?

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.